The message is very important, so it is supposedas soon as possible.A. to be sentB. to sen

发布时间：2020-08-15 00:41:14

The message is very important, so it is supposed    as soon as possible.
A. to be sent
B. to send
C. being sent
D. sending

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(答案→)A. to be sent
B. to send
C. being sent
D. sending
解析： be supposed to do是固定搭配。又因it（the message）与send因为被动关系，故用动词不定式的被动语态。
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